43f693584b
* Use '= default' to define a trivial default constructor. clang-tidymodernize-use-equals-default. * Spelling correction. * nullptr instead of NULL. Bug: chromium:346952289 Change-Id: I3c338a4d16f5afa4fa14ac62a05fe6437800c46e Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5868345 Reviewed-by: David Bertoni <dbertoni@chromium.org> Commit-Queue: Solomon Kinard <solomonkinard@chromium.org> Cr-Commit-Position: refs/heads/main@{#1357487}
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
// Copyright 2015 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "extensions/browser/extension_host_queue.h"
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#include "base/functional/bind.h"
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#include "base/location.h"
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#include "base/no_destructor.h"
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#include "base/ranges/algorithm.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/task/single_thread_task_runner.h"
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#include "extensions/browser/deferred_start_render_host.h"
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namespace extensions {
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ExtensionHostQueue::ExtensionHostQueue() : pending_create_(false) {}
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ExtensionHostQueue::~ExtensionHostQueue() = default;
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// static
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ExtensionHostQueue& ExtensionHostQueue::GetInstance() {
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static base::NoDestructor<ExtensionHostQueue> queue;
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return *queue;
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}
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void ExtensionHostQueue::Add(DeferredStartRenderHost* host) {
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queue_.push_back(host);
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PostTask();
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}
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void ExtensionHostQueue::Remove(DeferredStartRenderHost* host) {
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auto it = base::ranges::find(queue_, host);
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if (it != queue_.end()) {
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queue_.erase(it);
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}
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}
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void ExtensionHostQueue::PostTask() {
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if (!pending_create_) {
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base::SingleThreadTaskRunner::GetCurrentDefault()->PostDelayedTask(
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FROM_HERE,
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base::BindOnce(&ExtensionHostQueue::ProcessOneHost,
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ptr_factory_.GetWeakPtr()),
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delay_);
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pending_create_ = true;
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}
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}
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void ExtensionHostQueue::ProcessOneHost() {
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pending_create_ = false;
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if (queue_.empty()) {
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return; // can happen on shutdown
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}
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queue_.front()->CreateRendererNow();
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queue_.pop_front();
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if (!queue_.empty()) {
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PostTask();
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}
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}
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} // namespace extensions
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